Electrical Engineering Questions And Answers :: Power Systems: part1

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Electrical Engineering : Power Systems QUESTIONS AND ANSWERS :: part1 : 16 to 20

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

16.The impedance of a circuit is given by z=3+j4. Its conductance will be


17.A consumer consume. 600 kWh per day at a load factor of 0.40. If the coneumer increases the load factor of 0.70 without increasing the maximum demand, what is the consumption of energy in kWh

950 kWh
1000 kWh
1050 kWh
1100 kWh

18.A 3-phase, 11 kv, 50 Hz, 200 kW load has a power factor of 0.8 lag. A delta connected 3-phase capacitor is used to improve the power factor to unity. The capacitance perphase of the capacitor in micro-farads is


19.For a single phase overhead line having solid copper conductors of diameter 1 cm, spaced 60 cm between centers, the inductance in mH/km is

0.05 + 0.2 ln 60
0.2 ln 60
0.05 + 0.2 ln (6010.5)
0.2 ln (60/0.5)

20.The main consideration for higher and higher operating voltage of transmission is to

increase the efficiency of transmission
reduce power losses
increase power transmission capability
both (a) and (b) above

More Power Systems QUESTIONS AND ANSWERS available in next pages

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